公开(公告)号：US20080079410A1

公开(公告)日：2008-04-03

申请号：US11902089

申请日：2007-09-19

申请人： Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Yoichi Deguchi ,  Satoshi Wada ,  Yoshihisa Minami

发明人： Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Yoichi Deguchi ,  Satoshi Wada ,  Yoshihisa Minami

IPC分类号： G05F1/575 ,  G05F1/618

CPC分类号： G05F1/575

摘要： A power supply device includes an inductor controlled by switching to be charged or discharged such that a DC input voltage is boosted and a capacitor which smoothes the boosted voltage to generate a DC output voltage. Specifically, the power supply device further includes a transistor connected between the inductor and the capacitor to carry out a rectification function; an output voltage determination circuit which refers to the DC input voltage and the DC output voltage to determine the level of these voltages; and a current control circuit which controls a current flowing through the transistor such that the current has a predetermined value when the output voltage determination circuit determines that the DC output voltage is lower than the DC input voltage.

摘要翻译： 电源装置包括通过切换进行充电或放电控制的电感器，使得DC输入电压升压，以及电容器，其使升压电压平滑以产生DC输出电压。 具体地，电源装置还包括连接在电感器和电容器之间的晶体管，以实现整流功能; 输出电压确定电路，其参考DC输入电压和DC输出电压以确定这些电压的电平; 以及电流控制电路，其控制流过所述晶体管的电流，使得当所述输出电压确定电路确定所述DC输出电压低于所述DC输入电压时，所述电流具有预定值。

公开(公告)号：US07852059B2

公开(公告)日：2010-12-14

申请号：US11902089

申请日：2007-09-19

申请人： Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Yoichi Deguchi ,  Satoshi Wada ,  Yoshihisa Minami

发明人： Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Yoichi Deguchi ,  Satoshi Wada ,  Yoshihisa Minami

IPC分类号： G05F1/40

CPC分类号： G05F1/575

摘要： A power supply device includes an inductor controlled by switching to be charged or discharged such that a DC input voltage is boosted and a capacitor which smoothes the boosted voltage to generate a DC output voltage. Specifically, the power supply device further includes a transistor connected between the inductor and the capacitor to carry out a rectification function; an output voltage determination circuit which refers to the DC input voltage and the DC output voltage to determine the level of these voltages; and a current control circuit which controls a current flowing through the transistor such that the current has a predetermined value when the output voltage determination circuit determines that the DC output voltage is lower than the DC input voltage.

摘要翻译： 电源装置包括通过切换进行充电或放电控制的电感器，使得DC输入电压升压，以及电容器，其使升压电压平滑以产生DC输出电压。 具体地，电源装置还包括连接在电感器和电容器之间的晶体管，以实现整流功能; 输出电压确定电路，其参考DC输入电压和DC输出电压以确定这些电压的电平; 以及电流控制电路，其控制流过所述晶体管的电流，使得当所述输出电压确定电路确定所述DC输出电压低于所述DC输入电压时，所述电流具有预定值。

公开(公告)号：US20080074158A1

公开(公告)日：2008-03-27

申请号：US11898701

申请日：2007-09-14

申请人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Satoshi Wada ,  Rumi Nakai

发明人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Satoshi Wada ,  Rumi Nakai

IPC分类号： H03L7/00

CPC分类号： H02M1/36 ,  Y10S323/901

摘要： A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device is smaller than a reference voltage; and a control circuit which operates in substitution for the startup circuit when the output voltage is higher than the reference voltage to control the on/off operation of the switch element such that the output voltage reaches a target value. The startup circuit includes an oscillation circuit for generating a pulse signal which has a predetermined on/off ratio, a current comparison circuit for comparing a current of the switch element with a predetermined restriction value, and a drive circuit for generating a drive signal based on which the switch element is turned on/off, the drive signal being generated from the pulse signal to turn on the switch element, and the drive signal being generated from the output of the current comparison circuit or the pulse signal to turn off the switch element.

摘要翻译： 升压电源装置包括：升压转换器; 启动电路，当所述器件的输出电压小于参考电压时，控制所述升压转换器的开关元件的接通/断开操作; 以及控制电路，其在输出电压高于基准电压时代替启动电路，以控制开关元件的导通/截止操作，使得输出电压达到目标值。 启动电路包括用于产生具有预定的导通/关断比的脉冲信号的振荡电路，用于将开关元件的电流与预定限制值进行比较的电流比较电路，以及用于产生基于 所述开关元件被接通/断开，所述驱动信号从所述脉冲信号产生，以接通所述开关元件，并且所述驱动信号是从所述当前比较电路的输出或所述脉冲信号产生的，以将所述开关元件 。

公开(公告)号：US07825646B2

公开(公告)日：2010-11-02

申请号：US11905399

申请日：2007-09-28

申请人： Takuya Ishii ,  Mikio Motomori ,  Junichi Morita ,  Takashi Ryu ,  Masaaki Koto ,  Makoto Ishimaru ,  Kazuhito Kimura ,  Satoshi Wada

发明人： Takuya Ishii ,  Mikio Motomori ,  Junichi Morita ,  Takashi Ryu ,  Masaaki Koto ,  Makoto Ishimaru ,  Kazuhito Kimura ,  Satoshi Wada

IPC分类号： G05F1/40

CPC分类号： H02M3/156

摘要： The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.

摘要翻译： 本发明提供了一种电流模式控制升压转换器，其能够将最小占空比降低到足够小的值，并且有助于设定最大占空比。 升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。 控制电路10包括比较器11和定时器电路12.通过这种配置，主开关3的接通时间被设定为预定值，并且控制以三角波形变化的电感器电流的谷值。 因此，主开关的断开时间被调节以稳定输出。 由于可以根据需要设定主开关3的导通时间，所以可以将最小占空比降低到零或足够小的值。

公开(公告)号：US07567069B2

公开(公告)日：2009-07-28

申请号：US11898701

申请日：2007-09-14

申请人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Satoshi Wada ,  Rumi Nakai

发明人： Takashi Ryu ,  Takuya Ishii ,  Mikio Motomori ,  Kazuhito Kimura ,  Satoshi Wada ,  Rumi Nakai

IPC分类号： G05F1/40 ,  H02M3/18

CPC分类号： H02M1/36 ,  Y10S323/901

摘要： A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device is smaller than a reference voltage; and a control circuit which operates in substitution for the startup circuit when the output voltage is higher than the reference voltage to control the on/off operation of the switch element such that the output voltage reaches a target value. The startup circuit includes an oscillation circuit for generating a pulse signal which has a predetermined on/off ratio, a current comparison circuit for comparing a current of the switch element with a predetermined restriction value, and a drive circuit for generating a drive signal based on which the switch element is turned on/off, the drive signal being generated from the pulse signal to turn on the switch element, and the drive signal being generated from the output of the current comparison circuit or the pulse signal to turn off the switch element.

摘要翻译： 升压电源装置包括：升压转换器; 启动电路，当所述器件的输出电压小于参考电压时，控制所述升压转换器的开关元件的接通/断开操作; 以及控制电路，其在输出电压高于基准电压时代替启动电路，以控制开关元件的导通/截止操作，使得输出电压达到目标值。 启动电路包括用于产生具有预定的导通/关断比的脉冲信号的振荡电路，用于将开关元件的电流与预定限制值进行比较的电流比较电路，以及用于产生基于 所述开关元件被接通/断开，所述驱动信号从所述脉冲信号产生，以接通所述开关元件，并且所述驱动信号是从所述当前比较电路的输出或所述脉冲信号产生的，以将所述开关元件 。

公开(公告)号：US20080211475A1

公开(公告)日：2008-09-04

申请号：US11905399

申请日：2007-09-28

申请人： Takuya Ishii ,  Mikio Motomori ,  Junichi Morita ,  Takashi Ryu ,  Masaaki Koto ,  Makoto Ishimaru ,  Kazuhito Kimura ,  Satoshi Wada

发明人： Takuya Ishii ,  Mikio Motomori ,  Junichi Morita ,  Takashi Ryu ,  Masaaki Koto ,  Makoto Ishimaru ,  Kazuhito Kimura ,  Satoshi Wada

IPC分类号： G05F1/565

CPC分类号： H02M3/156

摘要： The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.

摘要翻译： 本发明提供了一种电流模式控制升压转换器，其能够将最小占空比降低到足够小的值，并且有助于设定最大占空比。 升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。 控制电路10包括比较器11和定时器电路12。 利用这种配置，主开关3的接通时间被设定为预定值，并且控制以三角波形变化的电感器电流的谷值。 因此，主开关的断开时间被调节以稳定输出。 由于可以根据需要设定主开关3的导通时间，所以可以将最小占空比降低到零或足够小的值。

公开(公告)号：US07081741B2

公开(公告)日：2006-07-25

申请号：US11153230

申请日：2005-06-15

申请人： Takuya Ishii ,  Takashi Ryu ,  Mikio Motomori ,  Hirohisa Tanabe ,  Masato Yoshida ,  Kazuhito Kimura ,  Tomoya Shigemi

发明人： Takuya Ishii ,  Takashi Ryu ,  Mikio Motomori ,  Hirohisa Tanabe ,  Masato Yoshida ,  Kazuhito Kimura ,  Tomoya Shigemi

IPC分类号： G05F1/577

CPC分类号： H02M3/158 ,  H02M2001/008

摘要： For controlling DC-DC converters conforming to voltage mode control system and current mode control system, in multi-output power supply, first converter section 2 is configured that first detection circuit 31 outputs first control signal, that first oscillation circuit 32 outputs first triangular wave signal and clock signal, and that first pulse-width modulation circuit 33 drives first switch by comparing first control signal with first triangular wave signal. Second converter section 4 is configured that second detection circuit 34 outputs second control signal, that second oscillation circuit 35 outputs second triangular wave signal synchronized with clock signal, that current detection circuit 36 outputs current signal of second inductor, and that second pulse-width modulation circuit 37 turns ON second switch in synchronization with clock signal and turns OFF second switch by calculating or comparing second control signal, the second triangular wave signal and current signal.

公开(公告)号：US20060044724A1

公开(公告)日：2006-03-02

申请号：US11153230

申请日：2005-06-15

申请人： Takuya Ishii ,  Takashi Ryu ,  Mikio Motomori ,  Hirohisa Tanabe ,  Masato Yoshida ,  Kazuhito Kimura ,  Tomoya Shigemi

发明人： Takuya Ishii ,  Takashi Ryu ,  Mikio Motomori ,  Hirohisa Tanabe ,  Masato Yoshida ,  Kazuhito Kimura ,  Tomoya Shigemi

IPC分类号： H02H3/20

CPC分类号： H02M3/158 ,  H02M2001/008

摘要： For controlling DC-DC converters conforming to voltage mode control system and current mode control system, in multi-output power supply, first converter section 2 is configured that first detection circuit 31 outputs first control signal, that first oscillation circuit 32 outputs first triangular wave signal and clock signal, and that first pulse-width modulation circuit 33 drives first switch by comparing first control signal with first triangular wave signal. Second converter section 4 is configured that second detection circuit 34 outputs second control signal, that second oscillation circuit 35 outputs second triangular wave signal synchronized with clock signal, that current detection circuit 36 outputs current signal of second inductor, and that second pulse-width modulation circuit 37 turns ON second switch in synchronization with clock signal and turns OFF second switch by calculating or comparing second control signal, the second triangular wave signal and current signal.

摘要翻译： 为了控制符合电压模式控制系统和电流模式控制系统的DC-DC转换器，在多输出电源中，第一转换器部分2被配置为：第一检测电路31输出第一控制信号，第一振荡电路32输出第一三角波 信号和时钟信号，并且第一脉冲宽度调制电路33通过将第一控制信号与第一三角波信号进行比较来驱动第一开关。 第二转换器部分4被配置为第二检测电路34输出第二控制信号，第二振荡电路35输出与时钟信号同步的第二三角波信号，电流检测电路36输出第二电感器的电流信号，第二脉冲宽度调制 电路37与时钟信号同步地接通第二开关，并通过计算或比较第二控制信号，第二三角波信号和电流信号来关断第二开关。

公开(公告)号：US20080079315A1

公开(公告)日：2008-04-03

申请号：US11905052

申请日：2007-09-27

申请人： Mikio Motomori ,  Takuya Ishii ,  Yoichi Deguchi

发明人： Mikio Motomori ,  Takuya Ishii ,  Yoichi Deguchi

IPC分类号： H02J1/10

CPC分类号： H02M3/158 ,  H02M2001/007 ,  H02M2001/009 ,  Y10T307/50

摘要： A semiconductor integrated circuit (10A) which converts an input supply voltage (Vi=2.5 to 4 V) applied to an input terminal (P1) into a first output voltage (Vo1=5 V) and outputs the first output voltage from an output terminal (P2), includes a first control circuit (17) which supplies a switching unit (11, 12, 13, 14) interposed between the input terminal (P1) and the output terminal (P2) with a switching signal so as to bring a feedback voltage (Vf1) based on an output voltage of the output terminal (P2) close to a target value; and an external setting terminal (P3) which sets the feedback voltage (Vf1) to a prescribed potential regardless of voltage of the output terminal (P2).

摘要翻译： 一种半导体集成电路（10A），其将施加到输入端子（P 1）的输入电源电压（Vi = 2.5至4V）转换为第一输出电压（Vo 1 = 5V）并将第一输出电压从 输出端子（P 2）包括第一控制电路（17），其将插入在输入端子（P1）和输出端子（P 2）之间的开关单元（11,12,13,14） 信号，使得基于输出端子（P 2）的输出电压接近目标值的反馈电压（Vf 1）; 以及将反馈电压（Vf 1）设定为规定电位的外部设定端子（P 3），而与输出端子（P 2）的电压无关。

公开(公告)号：US07075275B2

公开(公告)日：2006-07-11

申请号：US11280314

申请日：2005-11-17

申请人： Mikio Motomori ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

发明人： Mikio Motomori ,  Takuya Ishii ,  Takashi Ryu ,  Hiroki Akashi ,  Hirohisa Tanabe ,  Makoto Ishimaru ,  Tomoya Shigemi

IPC分类号： G05F1/70 ,  H05B4/24

CPC分类号： H02M3/1588 ,  H02M2001/0025 ,  H02M2001/0029 ,  Y02B70/1466

摘要： A DC-DC converter has switching means which generates a continuous switching voltage having a specified period from an input voltage and outputs the generated switching voltage, output voltage generating means which receives the switching voltage at an inductor and generates an output voltage obtained by rectifying and smoothing a voltage generated in the inductor, lamp signal generating means which generates a lamp signal and outputs the generated lamp signal, and control means which performs an arithmetic operation using a current signal relative to a current flowing in the inductor, an error signal relative to the output voltage, and the lamp signal to generate a control signal for controlling the operation of the switching means and outputs the generated control signal to the switching means. The lamp signal generating means includes first signal generating means for generating a first output signal based on a frequency divided signal having first and second periods obtained by dividing the time of a clock signal having the specified period and second signal generating means for generating a second output signal having a phase 180 degrees different from the phase of the first output signal based on the frequency divided signal, generates the lamp signal which rises after being held at a constant value for a specified time period in each of the first and second periods, and outputs the generated lamp signal.

摘要翻译： DC-DC转换器具有切换装置，其从输入电压产生具有指定周期的连续切换电压，并输出产生的开关电压，输出电压产生装置，其接收电感器的开关电压，并产生通过整流和 平滑电感器中产生的电压，产生灯信号的灯信号产生装置并输出所产生的灯信号;以及控制装置，其使用相对于在电感器中流动的电流的电流信号进行算术运算，相对于 输出电压和灯信号，以产生用于控制开关装置的操作的控制信号，并将所生成的控制信号输出到开关装置。 灯信号产生装置包括第一信号产生装置，用于根据具有通过划分具有指定周期的时钟信号的时间获得的第一和第二周期的分频信号产生第一输出信号，以及用于产生第二输出的第二信号产生装置 基于分频信号具有与第一输出信号的相位相差180度的信号的信号，产生在第一和第二周期中的每个中保持恒定值一定时间后上升的灯信号，以及 输出生成的灯信号。